Lawn sprinkler



y 1929- M. SCHNEIDER 1,712,523

LAWN SPRINKLER Filed Sept. 6, 1927 Ill. HHI

IN V EN TOR.

Max'abnejdzr BY .75 Z

ATTORNEYS.

Patented May 14, 1929.

UNITED STATES MAX SCHNEIDER, 03 DENVER. COLORADO.

LAWN SPRINKLER.

Application filed September 6, 1927.

This invent-ion relates to improvements in lawn sprinklers and hasreference more par ticularly to an improvedsprinkler of the oscillatingtype.

For the purpose of irrigating lawns it is often desirable to employ asprinkler that can be set on the ground and which will sprinkle an areawhose size and shape can be varied. In sprinkling parkings the sprinklermust cover a long narrow area; when sprinkling that portion adjacent thehouse the sprinkler should cover a semi-circular space when placed alongone side of the house and when placed at one corner of? the house itshould cover a sector shaped area of 270 degrees in extent. W'Vhen largelawns are to be irrigated the sprinkler should cover a whole circle.

It is the object of this invention to produce a sprinkler that can be soadjusted that it will irrigate sectors varying from a few degrees inwidth to a complete circle.

It is a further object of this invention to produce a sprinkler of theoscillating type which shall be of simple and substantial construction,which can be cheaply made and which will not readily get out of order.

The above and other objects that may be come appznrent as thisdescription proceeds are attained by means of a construction and anarrangement of parts that will now be described in detail and referencefor this purpose will now be had to the accompanying drawing in whichone embodiment of my invention has been shown and in which:

Fig. 1 is a top plan view of my improved sprinkler,

Fig. 2 is a section taken on line 22, Fig. 1.

Fig. 3 is a section taken on line 3-3, Fig. 2 andshows the relationshipof the deflector plate to the oscillating arm and,

Fig. 4 is a section corresponding to that shown in Fig. 3 and shows aslightly modified construction.

In the drawing I have illustrated a base having a ring 5 that is adaptedto rest upon the surface of the ground and to which the central bodyportion 6 is attached by means of a plurality of radial arms or supports*7. The central body portion 6 has an opening 8 whose outer end 9 isthreaded so that connection can readily be made between the sprinklerand the end of a hose. The inner end of the opening 8' terminates in anupwardly extending portion 9 that is concen- Serial No. 217,614.

trio with the ring 5. The inner surface of opening 9 is threaded andreceives the threaded end 10 of the pivot tube 11. This tube has anannular flange 12 whose lower surface abuts the upper surface 13 of thebase and whose upper surface serves as a support for the hollow hub 14from which the tubular arm 15 extends. Hub 14 can be constructed in anysuitable way but has been shown as formed from a cup shaped member whosebottom 16 has a central opening through which tube 11 extends, and acover 17, that is provided with a downwardly extending circular flange18 which has its outer surfaces formed with threads that en agecorresponding threads in the upper end of the cylindrical side of thecup portion. Cover 17 has a central opening through which tube 11extends. The holes in the bottom 16 and in the cover 17 are of such sizethat they make a close fit with the tube, but permit tt'ree rotation ofthe hub. The upper end of tube 11 has a central threaded opening for thereception of the threaded end 19 of the screw 20; this screw is providedwith wings 21 and passes through the washer 22 and the two stops 23 and24. The stops 23 and 24 are formed from metal bars having their outerends 25 bent downwardly and of such length that they intersect the pathof the radial tube 15 and limit its movement in both directions. Bymeans of the screw 20 the stops 23 and 24 may be clamped in any positiondesired. Tube 11 is also provided with several openings 26 through whichwater may flow into the interior of hub 14.

For the purpose of producing a force that will cause the tube 15 tooscillate when water is flowing through it, I have provided it with adeflector plate 27 that is attached to the outer end of the tubular arm15 by means of a pivot 28 whose axis is parallel with the axis of thetube 11. The deflector plate 27 has only a very short section 29 on theinside of the pivot while the part on the outside of the pivot point isquite long and wide. The end 29 is of the same width as the opening inwhich it is pivoted so that when it is in the position indicated by fulllines in Fig. 3 the end of tube 15 will be closed except for the opening30 and there fore the water must flow out through this opening. Thepressure of the water on the surface of the end 29 will tend to hold thedeflector plate in the position shown. The

water that flows outwardly through opening 30 strikes the surface ofplate 27 and is deflected thereby producing a force that tends to movearm 15 from the full line to the dotted line position in Fig. 1. Thisforce is sufficient to make tube 15 swing with considerable velocity andwhen it strikes the stop 23 the momentum of the plate 27 will make itmove about its pivot from the full line to the dotted line position. Thereaction of the water will now produce a force acting in the oppositedirection and the arm 15 will swing about its pivot until it engages thestop 24 when its movement will cease abruptly thereby causing thedeflector plate to swing about its pivot whereby the direction of theforce will be again reversed. By means of the stops the are throughwhich the arm 15 swings can be adjusted to any extent desired. If bothof the stops are removed the arm 15 will continue to rotate in the samedirection as long as water is flowmg.

In Fig. 4 I have shown a modification in which the plate 27 has beenreplaced by a tube 31 whose dimension in one direction is equal to thedistance between the upper and lower sides of tube 15 but whose width 0is less than the width cl of the tube 15 so that tube 31 can move from.full line to dotted line position and vice versa. The outer end of thetube 31 is closed and provided with a plurality of slots through whichthe water will issue. The reaction of the water as it leaves the end ofthe tube 31 produces a force that makes the tube 15 swing about itspivot. When tube 15 stops suddenly the momentum will cause pivoted tube31 to swing from full line to dotted line position or in the reversedirection, whereby the direction of the actuating force is alsoreversed.

From the above it will be apparent that I have produced a sprinkler inwhich the spray is moved back and forth over a sector of any extent andwhose operating mechanism is of exceeding simplicity.

Having described the invention what I claim as new is 1. In a sprinklerhaving a supporting base and a nozzle pivotally secured thereto, a stopsurface located on each side of the nozzle, means comprising a deflectorplate pivotally secured near its inner end to the outer end of thenozzle for changing the direction of the water stream from one side oi?the axis of the nozzle to the other, said plate having its center ofgravity between its outer end and its pivot point whereby its momentumwill cause it to rotate about its pivot whenever the nozzle strikes oneof the stops and means tor limiting extent of the rotation of thedeflector means.

2. A spray devlce comprising a base, a

hollow pivot secured to the base, means for making connection betweenthe interior of the pivot and a source of water under pressure, atubular nozzle secured to the pivot by means which permits it tooscillate about the axis of the pivot, said pivot having an openingwhereby communication is provided between the interior of the pivot andthe nozzle so that water can flow outwardly through the nozzle, adeflector plate attached near its inner end to the outer end of thenozzle by means of a pivot substantially parallel with the pivot aboutwhich the nozzle oscillates, said plate serving as a means fordeflecting the water stream so that it will flow in a direction at anangle to the axis of the nozzle whereby a force will be produced thattends to rotate the nozzle about its pivot, said plate having its centerof gravity between its free end and the pivot, and a stop located oneach side of the nozzle.

3. In a sprinkler having a supporting base and a nozzle pivotallysecured thereto, a stop located on each side of the nozzle, a deflectorplate secured to the outer end of the nozzle by means of a pivot that issubstantially parallel with the pivot about which the nozzle moves, theinner end of said plate extending into the tube a short distance, saidinner end being adapted to engage the inside of the tube so as to form astop for limiting the oscillation of the plate about its pivot, theouter end of said plate extending outwardl beyond the pivot point tosuch a distance t iat the center of gravity of the plate will lie somedistance outside of the pivot about which the plate oscillates, wherebywhen the nozzle is suddenly brought to rest by striking one of the stopsthe plate will continue to move until it has crossed the axis of thenozzle and occupies a position in which the inner end of the platecontacts with the opposite inside surface of the nozzle.

4. In a sprinkler having a supporting base and a nozzle pivotallysecured thereto, a deflector plate secured to the outer end of thenozzle by means of a pivot that is substantially parallel with the pivotabout which the nozzle moves, the inner end of said plate extending intothe tube a short distance, said inner end being adapted to engage theinside of the tube so as to form a stop for limiting the oscillation ofthe plate about its pivot, the outer end of said plate extendingoutwardly beyond the pivot point to such a distance that the center ofgravity of the plate will lie some distance outside of the pivot aboutwhich the plate oscillates and stops carried by the base for limitingthe oscillation of the nozzle.

In testimony whereof I afiix my signature.

MAX SCHNEIDER.

